package club.bigtian.sync.service.impl;

import club.bigtian.sync.service.MySQLToClickHouseSyncService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import com.github.shyiko.mysql.binlog.BinaryLogClient;
import com.github.shyiko.mysql.binlog.event.EventType;
import com.github.shyiko.mysql.binlog.event.WriteRowsEventData;
import com.github.shyiko.mysql.binlog.event.UpdateRowsEventData;
import com.github.shyiko.mysql.binlog.event.DeleteRowsEventData;
import java.io.IOException;

/**
 * MySQL到ClickHouse同步服务实现类
 */
@Slf4j
@Service
public class MySQLToClickHouseSyncServiceImpl implements MySQLToClickHouseSyncService {

    @Override
    public void fullSync(String tableName) {
        // TODO: 实现MySQL到ClickHouse的全量同步逻辑
        log.info("执行MySQL到ClickHouse的全量同步，表名：{}", tableName);
    }

    @Override
    public void startIncrementalSync() {
        try {
            BinaryLogClient client = new BinaryLogClient("localhost", 3306, "root", "root");
            client.registerEventListener(event -> {
                EventType eventType = event.getHeader().getEventType();
                if (eventType == EventType.WRITE_ROWS) {
                    WriteRowsEventData data = event.getData();
                    // 处理插入事件
                    handleInsert(data);
                } else if (eventType == EventType.UPDATE_ROWS) {
                    UpdateRowsEventData data = event.getData();
                    // 处理更新事件
                    handleUpdate(data);
                } else if (eventType == EventType.DELETE_ROWS) {
                    DeleteRowsEventData data = event.getData();
                    // 处理删除事件
                    handleDelete(data);
                }
            });
            client.connect();
            log.info("增量同步已启动");
        } catch (IOException e) {
            log.error("启动增量同步失败: {}", e.getMessage(), e);
        }
    }

    private void handleInsert(WriteRowsEventData data) {
        // TODO: 实现插入事件处理逻辑
    }

    private void handleUpdate(UpdateRowsEventData data) {
        // TODO: 实现更新事件处理逻辑
    }

    private void handleDelete(DeleteRowsEventData data) {
        // TODO: 实现删除事件处理逻辑
    }

    @Override
    public void stopIncrementalSync() {
        // TODO: 实现停止增量同步的逻辑
        log.info("停止MySQL到ClickHouse的增量同步");
    }

    @Override
    public String getSyncStatus() {
        // TODO: 返回同步状态信息
        return "同步状态信息";
    }
} 